The different pony types of different AUs:
Pony/Houyhnhnm- Regular Pony. 1 on scale. Cutie marks are on hip
Ƥoni- Human with anthro appearance. 4 on scale. Cutie marks are on shoulder
Poner- Large/Amazon anthro. 3 on scale. Cutie marks are on midriff
Ponex- Average anthro. 3 on scale. Cutie marks are on back of chest/shoulder (above wings on pegasi)
Ynop- Bipedal pony. 2 on scale. Cutie marks are on… Actually, I don’t know just yet, maybe the hip. Or the chest?
Sugar Houyhnhnm- Alien G3.5 pony. 1 on scale. Cutie marks are on hip
There’s also the Pyno, but I haven’t designed anything about them yet
Also:
Strength- Dragons
Perception- Spirits
Endurance- Humans
Charisma- Ponies
Intelligence- Robots
Agility- Mobians
Luck- Pokemon
Also, a Fallout Equestria AU where the Six Virtues end up together and go on a journey. How would that work? Maybe it’s another world altogether?